CN103545485B - The preparation method of lithium ion cell electrode - Google Patents
The preparation method of lithium ion cell electrode Download PDFInfo
- Publication number
- CN103545485B CN103545485B CN201210242386.8A CN201210242386A CN103545485B CN 103545485 B CN103545485 B CN 103545485B CN 201210242386 A CN201210242386 A CN 201210242386A CN 103545485 B CN103545485 B CN 103545485B
- Authority
- CN
- China
- Prior art keywords
- supporting construction
- electrode
- graphene film
- lithium ion
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 100
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 62
- 239000007772 electrode material Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims description 33
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 229910002804 graphite Inorganic materials 0.000 claims description 17
- 239000010439 graphite Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 14
- 238000003776 cleavage reaction Methods 0.000 claims description 6
- 230000007017 scission Effects 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 240000007673 Origanum vulgare Species 0.000 claims description 2
- 235000004383 Origanum vulgare subsp. vulgare Nutrition 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 230000009514 concussion Effects 0.000 claims 1
- 238000010301 surface-oxidation reaction Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 40
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000011149 active material Substances 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 238000005411 Van der Waals force Methods 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000006258 conductive agent Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- -1 graphite Alkene Chemical class 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to a kind of preparation method of lithium ion cell electrode, the method is comprised the following steps：A supporter is provided, the supporter has a first surface；An at least graphene film is provided, the graphene film arranges or be formed at the first surface of the supporter；And, on the surface of the graphene film, one electrode material layer is set.
Description
Technical field
The present invention relates to a kind of lithium ion cell electrode.
Background technology
Existing lithium ion battery can be divided into takeup type and stacked two class, and which includes shell body, is packaged in shell body
Positive plate, negative plate, barrier film and electrolyte.The barrier film is arranged between positive plate and negative plate.The electrolyte fully infiltrates
Positive plate, negative plate and barrier film.The positive plate includes a plus plate current-collecting body and is formed at the positive pole on the plus plate current-collecting body surface
Material layer.The negative plate includes a negative current collector and is formed at the negative electrode material layer on the negative current collector surface.
Collector in battery is the structure for collecting electric current.Cell active materials are mainly produced by the function of collector
Raw electric current collects to form larger current versus output, therefore collector should be fully contacted with active material, and
And internal resistance as little as possible should be preferred.In the electrode slice of existing lithium ion battery, collector generally adopts sheet metal, such as copper
Paper tinsel, aluminium foil.However, these sheet metals typically have larger weight, therefore, prepared as collector using sheet metal
Lithium ion cell electrode in the case where weight is certain, energy density is less.
The content of the invention
In view of this, it is necessory to provide a kind of preparation method of the lithium ion cell electrode with large energy density.
A kind of preparation method of lithium ion cell electrode, the method are comprised the following steps：A supporter is provided, the supporter
With a first surface；An at least graphene film is provided, the graphene film arranges or be formed at the first surface of the supporter；
And, on the surface of the graphene film, one electrode material layer is set.
Compared to prior art, the lithium ion prepared by the preparation method of lithium ion cell electrode provided by the present invention
The collector of battery electrode is made up of graphene film and supporter, and the density of graphene film is less, therefore, the weight of collector compared with
It is little, simultaneously as the chemical stability of Graphene is high, it is difficult to be corroded, therefore, collector is difficult to be destroyed, so, using should
The lithium ion battery of collector has higher energy density and longer service life.
Description of the drawings
Fig. 1 applies the side schematic view of the lithium ion cell electrode that example is provided for the present invention.
Fig. 2 is the flow chart of the preparation method of lithium ion cell electrode provided in an embodiment of the present invention.
Structural representations of the Fig. 3 for the electrode material layer in Fig. 1.
Stereoscan photographs of the Fig. 4 for the electrode material layer in Fig. 1.
Main element symbol description
| Electrode | 10 |
| Collector | 12 |
| Supporting construction | 12a |
| Graphene film | 12b |
| Electrode material layer | 144 |
| Active material particle | 144a |
| CNT | 144b |
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Fig. 1 is referred to, the embodiment of the present invention provides a kind of lithium ion cell electrode 10.The electrode 10 includes a collector 12
And an electrode material layer 144.The electrode material layer 144 is stacked with the collector 12.The electrode material layer 144 and collector
12 is two single layer structures.The collector 12 includes supporting construction 12a and a graphene film 12b, the graphite
Alkene film 12b is arranged at the surface of supporting construction 12a.The graphene film 12b is located at electrode material layer 144 and supporting construction
Between 12a, setting of fitting with the electrode material layer 144.
Fig. 2 is referred to, the present invention provides a kind of preparation method of above-mentioned lithium ion cell electrode, and the method includes following step
Suddenly：
S1：Supporting construction 12a is provided, supporting construction 12a has a surface；
S2：An at least graphene film 12b is provided, graphene film 12b arranges or be formed at the table of supporting construction 12a
Face；And,
S3：One electrode material layer 144 is set on the surface of the graphene film 12b, makes graphene film 12b be located at the electricity
Between pole material layer 144 and supporting construction 12a.
In step sl, supporting construction 12a is used to support graphene film 12b.The material of supporting construction 12a is close
Spend less and the material with stronger resistance to corrosion, such as macromolecular material, ceramics or glass.Supporting construction 12a can be with
For a layer structure, preferably 1 micron to 1 millimeter of the thickness of supporting construction 12a.
In step s 2, the graphene film 12b is the membrane structure with certain area of a two-dimensional structure.The graphite
The thickness of alkene film 12b is 10 nanometers to 10 microns.Graphene film 12b includes at least one of which Graphene.When graphene film 12b bags
When including multi-layer graphene, the multi-layer graphene mutually can overlap to form graphene film 12b, so that graphene film 12b has more
Big area；Or the multi-layer graphene can be overlapped mutually to form graphene film 12b, so that the thickness of graphene film 12b increases
Plus.Preferably, graphene film 12b is a single-layer graphene.The Graphene is to pass through sp by multiple carbon atoms2Bond hybridization structure
Into individual layer two-dimension plane structure.The thickness of the Graphene can be the thickness of monolayer carbon atom.The graphene film 12b is
One self supporting structure, the self-supporting do not need large-area carrier supported for graphene film 12b, as long as and relative both sides provide
Support force can be hanging on the whole and keep itself membranaceous state, will graphene film 12b be placed in（Or be fixed on）Interval one
When on two supporters that fixed range is arranged, the graphene film 12b between two supporters can vacantly keep itself
Membranaceous state.
The preparation method of the graphene film 12b can be chemical vapour deposition technique, mechanical pressurization method, LB methods, solwution method
Or the method such as take is torn using adhesive tape from oriented graphite.
The present embodiment only describes the preparation process of the graphene film 12b by taking mechanical pressurization method as an example in detail.Specifically, institute
State graphene film 12b to prepare using mechanical pressurization method, specifically include following steps：
（1）With the surface of oxygen plasma process supporting construction 12a, it is allowed to oxide layer.
（2）One block highly oriented pyrolytic graphite is provided, the highly oriented pyrolytic graphite is cut out into flat surface and is occurred clean
Cleavage surface, the highly oriented pyrolytic graphite block with cleavage surface for obtaining is put into the oxide layer on the surface of supporting construction 12a
On.
（3）The highly oriented pyrolytic graphite with cleavage surface handled well is placed in into one together with supporting construction 12a
In fixture, then the fixture is put in pressue device, and applies pressure to the fixture, the pressure is 100 wild marjorams 200
Ox, pressure time are 5 minutes to 10 minutes, then, discharge pressure, remove block highly oriented pyrolytic graphite, take out the support
Structure 12a, forms graphene film 12b on the surface oxide layer of supporting construction 12a.Said process enters in clean room
OK.The fixture has the surface of flat smooth, the surface and supporting construction 12a, the block highly oriented pyrolytic graphite
It is in close contact.The graphene film 12b prepared by said method is adopted for single-layer graphene.
When the graphene film 12b by adhesive tape is arranged on the surface of supporting construction 12a, on the adhesive tape
Between surfaces of the graphene film 12b by supporting construction 12a, bigger Van der Waals force is transferred to supporting construction 12a
Surface on, i.e. the Van der Waals force between the graphene film 12b and the surface of supporting construction 12a be more than the graphite
Van der Waals force between alkene film 12b and adhesive tape.
In step s3, when electrode material layer 144 can be mainly uniform by electrode active material, conductive agent and binding agent
Mixing is formed, and electrode material layer 144 can be by coating the slurry containing electrode active material, conductive agent and binding agent in graphite
The surface of alkene film 12b.In another embodiment, electrode material layer 144 can also be made up of electrode active material and CNT,
That is, electrode material layer 144 only includes electrode active material and CNT.The preparation method of the electrode material layer 144 include with
Lower step：
S31, prepares a carbon nanometer tube material；S32, there is provided electrode active material and a solvent；S33, by the CNT
Raw material and electrode active material are added into the solvent, and ultrasonic disperse makes the carbon nanometer tube material and the electrode activity thing
Matter is mutually mixed to form a mixture；And S34, the mixture is separated from solvent, after being dried the mixture, forms described
Electrode material layer.
The preparation method of carbon nanometer tube material that step S31 is provided is：Prepare a carbon nano-pipe array and be listed in a substrate；Should
Carbon nano pipe array is scraped from the substrate, obtains carbon nanometer tube material.Preferably, the carbon nano-pipe array is classified as
Carbon nano pipe array.Carbon nano tube surface in the super in-line arrangement carbon nano pipe array is pure, and length is generally higher than micro- equal to 300
Rice.The preparation method of the carbon nano pipe array is not limited, can be molten for chemical vapour deposition technique, arc discharge preparation method or gas
Glue preparation method etc..
Step S32, the solvent can include ethanol, ethylene glycol, propyl alcohol, isopropanol, acetone, 1-METHYLPYRROLIDONE
（NMP）And one or more in water.When the electrode 10 is lithium ion cell positive, the electrode active material is lived for positive pole
Property material, can be LiMn2O4, cobalt acid lithium, lithium nickelate or LiFePO4.When the electrode 10 is lithium ion battery negative, should
Electrode active material is negative electrode active material, and the negative electrode active material can be lithium titanate, silica, silicon nanoparticle and receive
One or more in meter He Jin.In the present embodiment, the lithium ion cell electrode 10 be positive pole, the material of its electrode material layer 144
Expect for cobalt acid lithium.
In step S33, the mixture is referred to and is made up of the CNT and electrode active material.The carbon nanometer
It is less than or equal to 20%, preferably 1% to 10% more than or equal to 0.1% that the quality of pipe raw material accounts for the percentage of mixture gross mass.Institute
The power for stating ultrasound is 400 watts to 1500 watts, preferably 800 watts to 1000 watts.In the step, need the CNT is former
Material, electrode active material and solvent supersonic shake 2 minutes to 30 minutes to obtain being made up of CNT and electrode active material
Mixture, preferably the time of the ultrasonic vibration be 5 minutes to 10 minutes.The mode of ultrasonic vibration can be shaken for continuous ultrasound
Swing, it is also possible to which impulse ultrasound shakes.
Step S34 is specially：After ultrasonic vibration forms mixture, directly the mixture and solvent are stood more than 1
After minute, the mixture is deposited to the bottom of container, and CNT and electrode are not contained in the solvent on the mixture upper strata
Active material.As, during ultrasonic vibration, the CNT in carbon nanometer tube material mutually winds, one is formed network-like
Structure, coats winding during the electrode active material is distributed in the network-like structure and by the network-like structure, so that carbon
Nanotube source and electrode active material form the mixture of an integrality, so, during standing, the monolithic
The bottom of the mixture integral sinking to solvent of state.The solvent on mixture upper strata can be suctioned out from container using suction pipe, be made
Mixture is separated with solvent.After thing to be mixed is separated with solvent, the mixture is dried, obtains the electrode material layer 144.Can
With understand, after drying composite, can further by the mixture punching press after, according still further to preliminary dimension cutting formed electrode material
The bed of material 144.Refer to Fig. 3 and Fig. 4, the electrode material layer 144 prepared by the present embodiment only including active material particle 144a and
CNT 144b.Most of electrode active material particles 144a are attached to the surface of CNT 144b or by CNT
144b winds.Due to the structure that the network structure of CNT 144b compositions is a porous, most of electrode active material particles
144a particles are surrounded and are fixed by the network structure.CNT 144b can play fixation while as conductive agent
The effect of electrode active material particles 144a, therefore, the lithium ion battery material layer 144 does not need binding agent.The present embodiment institute
The electrode material layer of offer has the charge-discharge performance under higher electric conductivity and more excellent high magnification.Further, electrode
Weight in material layer 144 not including binding agent, in the case of the gross weight identical of electrode material layer 144, electrode activity thing
The weight of matter can improve more than 10% relative to traditional lithium ion cell electrode, therefore, the specific volume of the electrode material layer 144
Amount is larger.And, as binding agent is generally organic matter, there are pollution, the lithium ion battery electrode material layer 144 of the present invention to environment
It is without the need for organic binder bond, more environmentally-friendly.
After electrode material layer 144 is formed, the electrode material layer 144 is arranged at into the surface of graphene film 12b, this is made
Graphene film 12b is located between electrode material layer 144 and supporting construction 12a, so as to form the lithium ion cell electrode.The electrode
Material layer 144 can be fixed on the surface of graphene film 12b with the graphene film 12b viscosity of itself, it is also possible to solid by binding agent
It is scheduled on the surface of graphene film 12b.
The collection of the lithium ion cell electrode prepared by lithium ion cell electrode preparation method provided by the embodiment of the present invention
Fluid is made up of graphene film and supporter, and the density of graphene film is less, therefore, the weight of collector is less, simultaneously as
The chemical stability of Graphene is high, is difficult to be corroded, therefore, collector is difficult to be destroyed, so, using the collector lithium from
Sub- battery has higher energy density and longer service life.The electrode of lithium ion battery provided in an embodiment of the present invention
Preparation method is simple to operate, and cost is relatively low, and also helps industrialized production.
In addition, those skilled in the art can also do other changes in spirit of the invention, certainly, these are according to present invention essence
The change done by god, should all be included within scope of the present invention.
Claims (7)
1. a kind of preparation method of lithium ion cell electrode, which comprises the following steps：
A supporting construction is provided, the supporting construction has a surface；
An at least graphene film is provided, the graphene film is arranged at the surface of the supporting construction；And,
Prepare a carbon nanometer tube material, there is provided electrode active material and a solvent, by the carbon nanometer tube material and electrode activity thing
Matter is added into the solvent, and ultrasonic disperse makes the carbon nanometer tube material and the electrode active material be mutually mixed to form one
Mixture, the mixture is separated from solvent, after being dried the mixture, forms electrode material layer；
The electrode material layer is set directly at into the surface of the graphene film, makes the graphene film be located at the electrode material layer
And supporting construction between.
2. the preparation method of lithium ion cell electrode as claimed in claim 1, it is characterised in that the preparation of the graphene film
Method is chemical vapour deposition technique, mechanical pressurization method, LB methods, solwution method or is torn the method for taking using adhesive tape from oriented graphite.
3. the preparation method of lithium ion cell electrode as claimed in claim 1, it is characterised in that the graphene film is formed at
The surface of the supporting construction, specifically includes following steps：
With the surface of the oxygen plasma process supporting construction, an oxide layer is formed on the surface of supporting construction；
One block highly oriented pyrolytic graphite is provided, the highly oriented pyrolytic graphite is cut out into flat surface and clean cleavage is occurred
Face, in the oxide layer on the surface that the highly oriented pyrolytic graphite block with cleavage surface for obtaining is put into the supporting construction；
In a fixture, then the highly oriented pyrolytic graphite with cleavage surface handled well is placed in together with the supporting construction
The fixture is put in pressue device, and pressure is applied to the fixture；
Release pressure, removes block highly oriented pyrolytic graphite, takes out the supporting construction, in the surface oxidation of the supporting construction
Graphene film is formed on layer.
4. the preparation method of lithium ion cell electrode as claimed in claim 3, it is characterised in that the pressure is 100 wild marjorams
200 Ns, the pressure time is 5 minutes to 10 minutes.
5. the preparation method of lithium ion cell electrode as claimed in claim 3, it is characterised in that the graphene film is individual layer
Graphene.
6. the preparation method of lithium ion cell electrode as claimed in claim 1, it is characterised in that described to prepare the carbon nanometer
The step of pipe raw material, includes：
Carbon nano pipe array is provided, the carbon nano pipe array is formed at a substrate；And
The carbon nano pipe array is scraped from substrate and obtains the carbon nanometer tube material.
7. the preparation method of lithium ion cell electrode as claimed in claim 1, it is characterised in that the mode of the ultrasonic disperse
Shake for continuous ultrasound or impulse ultrasound concussion.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210242386.8A CN103545485B (en) | 2012-07-13 | 2012-07-13 | The preparation method of lithium ion cell electrode |
| TW101126691A TWI464946B (en) | 2012-07-13 | 2012-07-24 | Method for making lithium ion battery electrode |
| US13/662,768 US9537141B2 (en) | 2012-07-13 | 2012-10-29 | Method for making lithium ion battery electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210242386.8A CN103545485B (en) | 2012-07-13 | 2012-07-13 | The preparation method of lithium ion cell electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103545485A CN103545485A (en) | 2014-01-29 |
| CN103545485B true CN103545485B (en) | 2017-04-05 |
Family
ID=49912684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210242386.8A Active CN103545485B (en) | 2012-07-13 | 2012-07-13 | The preparation method of lithium ion cell electrode |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9537141B2 (en) |
| CN (1) | CN103545485B (en) |
| TW (1) | TWI464946B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112014006933B4 (en) | 2014-09-08 | 2023-11-30 | Gm Global Technology Operations, Llc | Method for producing a coating of submicron carbon particles or metal oxide particles on the surfaces of particles of an active electrode material for a lithium secondary battery |
| US10749170B2 (en) * | 2015-10-14 | 2020-08-18 | Northwestern University | Graphene-coated metal oxide spinel cathodes |
| CN110364659A (en) | 2018-03-26 | 2019-10-22 | 华硕电脑股份有限公司 | The manufacturing method of coiled battery |
| US11063248B2 (en) * | 2018-05-24 | 2021-07-13 | GM Global Technology Operations LLC | Protective coating for lithium-containing electrode and methods of making the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768012A (en) * | 2008-12-30 | 2010-07-07 | 国家纳米科学中心 | Method for preparing single-layer graphene film on SiO2 substrate directly |
| CN102208598A (en) * | 2011-05-12 | 2011-10-05 | 中国科学院宁波材料技术与工程研究所 | Electrode plate of graphene coating modified lithium secondary battery and manufacturing method thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060177659A1 (en) * | 2005-02-09 | 2006-08-10 | National Pingtung University Of Science & Technology | Powder containing carbon nanotube or carbon nanofiber and process for preparing the same |
| EP2034541B1 (en) * | 2006-06-27 | 2015-06-03 | Kao Corporation | Method for producing composite material for positive electrode of lithium battery |
| CN101420021B (en) * | 2007-10-26 | 2011-07-27 | 清华大学 | Positive pole of lithium ion cell and preparation method thereof |
| US7745047B2 (en) | 2007-11-05 | 2010-06-29 | Nanotek Instruments, Inc. | Nano graphene platelet-base composite anode compositions for lithium ion batteries |
| US8426064B2 (en) * | 2007-12-25 | 2013-04-23 | Kao Corporation | Composite material for positive electrode of lithium battery |
| US8057863B2 (en) * | 2008-12-05 | 2011-11-15 | The Regents Of The University Of California | Electrostatic force assisted deposition of graphene |
| KR101657146B1 (en) * | 2008-12-12 | 2016-09-13 | 어플라이드 머티어리얼스, 인코포레이티드 | Three-dimensional battery with hybrid nano-carbon layer |
| CN101811690B (en) * | 2009-02-24 | 2012-02-29 | 国家纳米科学中心 | Method for forming carbon composite structure by using carbon nano tube and graphene |
| US20100285358A1 (en) | 2009-05-07 | 2010-11-11 | Amprius, Inc. | Electrode Including Nanostructures for Rechargeable Cells |
| US9558860B2 (en) * | 2010-09-10 | 2017-01-31 | Samsung Electronics Co., Ltd. | Graphene-enhanced anode particulates for lithium ion batteries |
| DE112012002563B4 (en) * | 2011-03-25 | 2021-10-07 | Semiconductor Energy Laboratory Co., Ltd. | Lithium-ion secondary battery |
| US8951675B2 (en) * | 2011-10-13 | 2015-02-10 | Apple Inc. | Graphene current collectors in batteries for portable electronic devices |
-
2012
- 2012-07-13 CN CN201210242386.8A patent/CN103545485B/en active Active
- 2012-07-24 TW TW101126691A patent/TWI464946B/en active
- 2012-10-29 US US13/662,768 patent/US9537141B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768012A (en) * | 2008-12-30 | 2010-07-07 | 国家纳米科学中心 | Method for preparing single-layer graphene film on SiO2 substrate directly |
| CN102208598A (en) * | 2011-05-12 | 2011-10-05 | 中国科学院宁波材料技术与工程研究所 | Electrode plate of graphene coating modified lithium secondary battery and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 硅/碳/碳纳米管复合负极材料的电化学性能;栾振兴等;《材料热处理技术》;20110228;第40卷(第4期);摘要，第1节实验材料与方法 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103545485A (en) | 2014-01-29 |
| US9537141B2 (en) | 2017-01-03 |
| TW201403927A (en) | 2014-01-16 |
| TWI464946B (en) | 2014-12-11 |
| US20140013589A1 (en) | 2014-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103187575B (en) | The preparation method of film lithium ion battery | |
| CN103187586B (en) | Lithium ion battery | |
| CN103545556B (en) | The preparation method of film lithium ion battery | |
| CN103187572B (en) | Film lithium ion battery | |
| CN103545528B (en) | Lithium ion battery | |
| Ai et al. | Rational synthesis of branched CoMoO4@ CoNiO2 core/shell nanowire arrays for all-solid-state supercapacitors with improved performance | |
| Yao et al. | Highly conductive, mechanically robust, and electrochemically inactive TiC/C nanofiber scaffold for high-performance silicon anode batteries | |
| CN103545555B (en) | The preparation method of lithium ion battery | |
| TWI441375B (en) | Electrode for lithium ion cell | |
| Han et al. | Compressible, dense, three-dimensional holey graphene monolithic architecture | |
| CN103545529B (en) | Film lithium ion battery | |
| Xia et al. | Facile synthesis of free-standing silicon membranes with three-dimensional nanoarchitecture for anodes of lithium ion batteries | |
| Liu et al. | High performance all-carbon thin film supercapacitors | |
| TW201310761A (en) | Current collector and lithium ion cell using the same | |
| CN103545531B (en) | Lithium ion battery | |
| CN103545485B (en) | The preparation method of lithium ion cell electrode | |
| TWI445234B (en) | Method for making electrode for lithium ion cell | |
| CN103187591B (en) | The preparation method of lithium ion battery | |
| CN103545530B (en) | Collector, lithium ion cell electrode and lithium ion battery | |
| kumar Chinnalagu et al. | Fabrication of 2D-Borophene nanosheets anchored S, N-mesoporous carbon nanocomposite (SNC-Bp//SNC-Bp) symmetric device for high-performance supercapacitor application | |
| CN103545554B (en) | The preparation method of lithium ion battery | |
| TWI404256B (en) | A conductive-structured electrode | |
| TW200919804A (en) | Anode of lithium-ion battery, method of making the same and lithium-ion battery using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |